personally id go with the second one because it has lower miles and it looks like its in better condition also if you plan on adding a lift eventually youll save money down the road by buying one that already has the upgrades on it the thing to look out for is the tranny in the s broncos is iirc the eod which is essentially a c core but with electronic shifting controls and they dont tend to last without a rebuild especially if taken offroad heavily that being said a replacement tranny is easily found at a junkyard the ac probably isnt that expensive of a fix so i wouldnt be concerned about that too much